[tracing] Remove unncessary check while creating memory allocator dump
[tracing] Remove unncessary check while creating memory allocator dump

This CL removes the check for dots in the dump name. This was required
previously since dots were not allowed. Not dots are allowed in the
names in traces. So, this check can be removed.

Review URL: https://codereview.chromium.org/1416613003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#355954}

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk